Split CDATA containing closing triad ]]>

shared/src/main/scala/scala/xml/PCData.scala

@@ -26,7 +26,7 @@ class PCData(data: String) extends Atom[String](data) {
    *  @return the input string buffer with the formatted CDATA section
    */
   override def buildString(sb: StringBuilder): StringBuilder =
-    sb append "<![CDATA[%s]]>".format(data)
+    sb append "<![CDATA[%s]]>".format(data.replaceAll("]]>", "]]]]><![CDATA[>"))
 }
 
 /**

shared/src/test/scala/scala/xml/PCDataTest.scala

@@ -0,0 +1,37 @@
+package scala.xml
+
+import org.junit.Test
+import org.junit.Assert.assertEquals
+
+class PCDataTest {
+
+  @Test
+  def emptyTest = {
+    val pcdata = new PCData("")
+    assertEquals("<![CDATA[]]>", pcdata.toString)
+  }
+
+  @Test
+  def bracketTest = {
+    val pcdata = new PCData("[]")
+    assertEquals("<![CDATA[[]]]>", pcdata.toString)
+  }
+
+  @Test
+  def hellaBracketingTest = {
+    val pcdata = new PCData("[[[[[[[[]]]]]]]]")
+    assertEquals("<![CDATA[[[[[[[[[]]]]]]]]]]>", pcdata.toString)
+  }
+
+  @Test
+  def simpleNestingTest = {
+    val pcdata = new PCData("]]>")
+    assertEquals("<![CDATA[]]]]><![CDATA[>]]>", pcdata.toString)
+  }
+
+  @Test
+  def recursiveNestingTest = {
+    val pcdata = new PCData("<![CDATA[]]>")
+    assertEquals("<![CDATA[<![CDATA[]]]]><![CDATA[>]]>", pcdata.toString)
+  }
+}